<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type='primary' @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>
      <el-table :data="goodsList" style="width: 100%" border stripe>
        <el-table-column type="index" label="#" align="center">
        </el-table-column>
        <el-table-column prop="goods_name" min-width='260px' label="商品名称">
        </el-table-column>
        <el-table-column prop="goods_price" width="110px" align="center" label="商品价格(元)">
        </el-table-column>
        <el-table-column prop="goods_weight" width="90px" align="center" label="商品重量">
        </el-table-column>
        <el-table-column prop="add_time" width="200px" align="center" label="创建时间">
          <template slot-scope="scope">
            {{scope.row.add_time | dateFormat}}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="200px">
          <template slot-scope="scope">
            <el-button icon="el-icon-edit" size="mini" type="primary">编辑</el-button>
            <el-button icon="el-icon-delete" size="mini" type="danger" @click="deleteGoodsList(scope.row)">删除
            </el-button>
          </template>
        </el-table-column>
      </el-table>
      <el-pagination background @size-change="handleSizeChange" @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20]" :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper" :total="total">
      </el-pagination>
    </el-card>

  </div>
</template>

<script>
export default {
  data() {
    return {
      // 存放商品列表数据
      goodsList: [],
      // 查询参数对象
      queryInfo: {
        query: '',
        // 当前的页码值
        pagenum: 1,
        // 每一页显示多少条数据
        pagesize: 10
      },
      // 总数据条数(用来实现分页)
      total: 0,

    }
  },
  created() {
    this.getGoodsList()
  },
  methods: {
    async getGoodsList() {
      // 根据分页获取对应的商品列表
      const { data: res } = await this.$http.get('goods', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$Message.error('获取商品列表失败!')

      //   this.$Message.success('获取商品列表成功!')
      this.goodsList = res.data.goods
      this.total = res.data.total
    },
    // pageSize 改变时会触发	
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      this.getGoodsList()
    },
    // currentPage 改变时会触发	
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage;
      this.getGoodsList()

    },
    // 点击删除按钮触发
    async deleteGoodsList(row) {
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      if (confirmResult !== 'confirm') {
        return this.$Message.info('已经取消删除')
      }

      const { data: res } = await this.$http.delete(`goods/${row.goods_id}`)
      if (res.meta.status !== 200) return this.$$Message.error('删除失败!')

      this.$Message.success('删除成功')
      this.getGoodsList()

    },
    // 添加商品按钮
    goAddPage() {
      this.$router.push('/goods/add')
    }
  }

}
</script>


<style lang="less" scoped>
.el-row {
  margin: 10px 0;
}

.el-table {
  margin: 10px 0;
}
</style>